secretary of state hillary rodham clinton said assad's regime is a threat to millions of innocent people. >> our concerns are increasingly desperate assad regime might turn to chemical weapons. or might lose control of them to one of the many groups that are now operating within syria. >> secretary clinton said the u.s. and nato countries plan to announce more action on syria next week. >>> cuban officials say the u.s. government is lying about the health of allen gross. the potomac resident who has been in a cuban resident since 2009. it's concerned he may have cancer according to his wife. today the cuban foreign ministry disputed those reports that gross' health was deteriorating. they say he's been examined by a qualified cuban doctors. cuba is looking for concessions for five cuban agents who are serving sentences in the united states. >>> there is new information tonight about the changing conditions in the arctic. that frozen area is quite a ways from us here, but jay gray explains why experts believe that the changes there are affecting the weather here and everywhere else. >> re